Consider a point charge and an imaginary spherical surface surrounding it. Which of the following situations would bring about a change in the electrical flux through the surface?
A) Exchanging the spherical surface for a cylindrical surface that still contains the original point charge
B) Bringing a second point charge nearby, but outside the surface
C) Moving the point charge to a point not in the center of the spherical surface
D) Bringing a second point charge nearby, and within the surface

Question

Quizplus · Accepted Answer

Bringing a second point charge nearby and within the surface would bring about a change in the electrical flux through the surface because it would create an additional electric field that intersects with the surface, resulting in a change in the net amount of electric flux passing through the surface. The other choices (A, B, and C) do not involve changes in the electric field or its interaction with the surface, and therefore would not affect the electrical flux passing through the surface.

Consider a Point Charge and an Imaginary Spherical Surface Surrounding